Hebrews 11:12

And so from one man--and that when his powers were dead--there sprang a people as numerous 'as the stars in the heavens or the countless grains of sand upon the shore.'

Revelation 7:9-10

After this, in my vision, I saw a vast throng which no man could number, of men from every nation and of all tribes, and peoples, and languages. They stood in front of the throne and in front of the Lamb, robed in white, holding palm branches in their hands.

Treasury of Scripture Knowledge

Summary

As the host of heaven cannot be numbered, neither the sand of the sea measured: so will I multiply the seed of David my servant, and the Levites that minister unto me.

Bible References

The host

Hebrews 11:12
And so from one man--and that when his powers were dead--there sprang a people as numerous 'as the stars in the heavens or the countless grains of sand upon the shore.'
Revelation 7:9
After this, in my vision, I saw a vast throng which no man could number, of men from every nation and of all tribes, and peoples, and languages. They stood in front of the throne and in front of the Lamb, robed in white, holding palm branches in their hands.